Stapler



FIG. 1 is an upper front right perspective view of a stapler showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevation view of the stapler shown in FIG. 1, with a left side elevation view being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear elevation view thereof. 

The ornamental design for a stapler, as shown and described. 